A word processor is software that lets you write, edit, and format text documents on your computer or phone

Word processing software is the tool you use when you need to write something longer than a quick email or text message. It gives you a blank page, lets you type, and then handles all the formatting — making text bold or italic, changing font sizes, adding margins, organizing paragraphs, inserting images. The software saves your work as a file you can open again later, share with someone else, or print.

The most common word processor is Microsoft Word, which comes built into many computers and is part of Microsoft Office. But there are others: Google Docs (free, works in your web browser), Apple Pages (for Mac and iPad users), LibreOffice Writer (free and open-source), and WPS Office. They all do the same basic job — turn your typing into a formatted document — though they differ in cost, features, and where they store your files.

Key Takeaways

  • Word processors let you write, edit, format, and save text documents, and they work on computers, tablets, and phones.
  • Microsoft Word is the most widely used word processor, but Google Docs, Apple Pages, and LibreOffice Writer are free or lower-cost alternatives that do the same core job.
  • You can format text (bold, italic, underline), change fonts and sizes, add images, create tables, and adjust margins and spacing without learning any special code.
  • Most word processors save files in standard formats like .docx or .pdf, so you can share documents with people using different software.

How word processors differ from other writing tools

A word processor is not the same as a text editor or email. A text editor (like Notepad on Windows or TextEdit on Mac) saves plain text with no formatting at all — no bold, no colors, no font choices. An email program lets you compose messages but is designed for short communication, not long documents. A word processor sits in the middle: it gives you formatting power without requiring you to learn code, and it's built for documents you'll save, revise, and share.

Spreadsheet software (like Excel) and presentation software (like PowerPoint) are separate tools designed for different jobs. A spreadsheet organizes data in rows and columns and can do math. A presentation tool creates slides for talks or meetings. A word processor is for documents made mostly of text — letters, reports, essays, resumes, manuals, books.

What you can actually do in a word processor

When you open a blank document, you can type freely and go back to fix mistakes. You can select any text and make it bold, italic, or underlined. You can change the font (the style of letters), the size, and the color. You can adjust spacing between lines, set margins around the edges of the page, and create numbered or bulleted lists.

Most word processors let you insert images, tables, and shapes. You can add headers and footers (text that repeats at the top or bottom of every page), page numbers, and footnotes. You can search for a word and replace it everywhere in the document at once. You can set up a document to print on multiple pages with consistent formatting, or export it as a PDF so it looks the same on any device.

Advanced features vary by software. Microsoft Word and Google Docs let multiple people edit the same document at the same time. Word has mail merge (filling in names and addresses from a list to create personalized letters). LibreOffice Writer can handle very long documents with complex formatting. But the core job — writing and formatting text — is the same across all of them.

File formats and sharing documents

When you save a document in a word processor, it gets saved as a file with a name and an extension (the letters after the dot). Microsoft Word saves as .docx by default. Google Docs saves as .gdoc if you keep it in Google Drive, but can export as .docx or .pdf. Apple Pages saves as .pages. LibreOffice Writer uses .odt.

The most universal format is .docx (Microsoft Word format) because so many people use Word. If you save a document as .docx, someone using Google Docs or LibreOffice can open it without problems. PDF is even more universal — any device can open a PDF and it will look exactly the same, but you can't easily edit a PDF in a word processor. When you need to share a document and you're not sure what software the other person has, saving as .docx or .pdf is the safest choice.

Cloud storage versus files on your computer

Some word processors save files directly to your computer's hard drive (Microsoft Word, LibreOffice Writer, Apple Pages). Others save to the cloud — a server on the internet — by default (Google Docs). Cloud storage means your document is accessible from any device with internet access, and you don't have to remember to email yourself a copy. It also makes sharing easier: you can give someone a link instead of sending a file.

The trade-off is that cloud-based documents require an internet connection to open and edit, though most services let you work offline and sync when you reconnect. Microsoft Word now offers both: you can save to your computer or to OneDrive (Microsoft's cloud storage). Choose based on how you work — if you move between devices or collaborate with others, cloud storage is simpler. If you prefer everything on your own computer and don't share often, local storage is fine.

When to use a word processor versus other tools

Use a word processor when you're writing something that will be more than a few sentences and you want it to look polished. That includes resumes, cover letters, reports, essays, newsletters, instruction manuals, and short books. Use it when you need to format text in specific ways — different fonts for headings, indented paragraphs, page breaks between sections.

Don't use a word processor if you're organizing data (use a spreadsheet instead), creating a presentation (use PowerPoint or Google Slides), or just jotting down quick notes (a notes app is faster). If you're writing code or configuration files, use a text editor, not a word processor — word processors add invisible formatting that breaks code.

Frequently Asked Questions

Can I open a Word document in Google Docs?

Yes. Google Docs can open .docx files directly. You can upload a Word document to Google Drive, and Google Docs will convert it so you can edit it online. You can also read it back as a .docx file when you're done. Some complex formatting may shift slightly in the conversion, but basic text, fonts, and layout stay the same.

Do I need to pay for word processing software?

No. Google Docs is free and works in any web browser. LibreOffice Writer is free and works on Windows, Mac, and Linux. Apple Pages is free if you own an Apple device. Microsoft Word requires a subscription (Microsoft 365) or a one-time purchase, though many schools and employers provide it for free to their users.

What's the difference between saving and exporting?

Saving stores your document in the format the software uses by default — Word saves as .docx, Google Docs as .gdoc. Exporting converts your document to a different format, like PDF or .docx, usually as a one-time action. You export when you need to share the document with someone using different software or when you want a format that can't be edited.

Can I use word processing software on my phone?

Yes. Microsoft Word, Google Docs, Apple Pages, and LibreOffice all have phone apps. They work best for editing existing documents or writing short pieces — typing long documents on a phone is slower than on a computer. Phone versions have fewer formatting options but handle the basics well.